Portable hot water heater unit



Filed Nov. 19, 1945 Aug. 23, 1949. J. E. DAVIS, JR

I PORTABLE HOT WATER HEATER UNIT 2 Sheets-Sheet 1 JOHN E. DAVIS,

QQLFLLW Aug. 23, 1949. J. E. DAVIS, JR

PORTABLE HOT WATER HEATER UNIT Filed Nov. 19, 1945 2 Sheets-Sheet 2 FIG. 4

STANDARD STACK GALVANIZED SECTIONS IRON CAN 61. GAS CAN FIG. 5

JOHN E. DAVIS v Patented Aug. 23, 1949 UNITED STATES PATENT OFFICE 2,479,558 PORTABLE HOT WATER HEATER UNIT John Eayres Davis, Jr., United States Navy Application November 19, 1945, Serial No. 629,685

' 3 Claims. (Cl. 126-360) (Granted under I This invention relates to portable water heaters.

which is convenient is efiicient in operation.

It is known in heaters of various'and sundry types to accomto the drawings in which: r Figure 1 is an elevation showing the intake and vent fiues, the combustion chamber and the tank supporting bracket.

Figure 2 is a. plan view of the same.

section line 3-3 assembly removed.

Figure 4 is a sectional view, and partly in elevation, taken ofFigure Figure 5 is a plan View showing the device stowed in a conventional can. Referring to the drawings, 1, I0

partly in section along line 4-4 chamber I 2. is rotatably supported by bolt a channel which functions as a stabilizer for the device when the latter is immersed in a tank of water. Retainer clamp is is held in position over the edge of a tank of water by means or screw 2|. The buoyancy of the immersed combustion chamber is thereby the act amended April 30, 192

of March 3, 1883, as 8; 370 0. G. 757) overcome. In the intake fiue the burner assemly consisting of funnel 49', tube 4! and burner cross-bar 44 which is welded to funnel 40 and is supported in notch 45 in the upper edge of intake tube I0.

Foraminous screen 46 held by frame 41 is positioned intermediate to the funnel and burner It is Welded to the latter and funcflare-back or back fire preventer.

passes rapidly to th water.

One of the characteristics of this device is its stowability. It can be stowed in a small space and is very important in this respect removed with the exception of the one which is rigidly attached to the combustion chamber and the intake vent.

e surrounding of vent pipe are placed in front of the tank, all as illustrated in Figure 5.

The device is relatively free from sooting in operation. It is quickly cleaned after operation and is easily maintained in a sanitary condition.

While the embodiment herein shown has disclosed the device as applicable to cylindrical tank to heat a comparatively small quantity of water, it is not desired to be limited thereto as it is obvious to one familiar with the art that several units could be employed in heating a much larger quantity of water and changes in across-sectional shape of the flues, in the configuration of the tank supporting bracket, and in the supporting clamp and stabilizing channel, could be made without departing from either the spirit or scope of the invention,

This invention may be made or used by or for the Government of the United Statesfor governmental purposes without the payment to me of any royalties thereon or therefor.

- What I claim is:

l /In a portable water heater adapted to be immersed in a tank of water for heating, the combination of means ber, intakea-nd sectional outlet flues connected tojsaid combustion chamber, a fuel burner profuel feeding tube mounted within theihtake flue and positioned within the combustion chamber, clamping means rigidly connected to and'spaoi'ng the said intake and outlet Times, a clamp provided with a laterally extending I channel member and rigidly attached to said intake flue, a'bra'cket'member hingedly mounted on said clamping means formed and adapted in open position to rest on said clamp and laterally extending channel member and in closed position to pivot over the inlet and outlet fines to occupy a position alongside said outlet flue, with a fuel tank adapted to feed fuel to the burner and to be freely supported by latter is in open "position, the said combination being adapted to be'readily assembled for operation disassembled for compact stowage.

, 2. A'portabl'e water heater adapted to be immersed in a tank of "Water for heating, comprising means forming a'combustion chamber, intake and outlet 'flues connected to the combustion chamber, clamping means rigidly connected to and sp'a'ci'ngthe saidintake and outlet flues, a clamp provided with attachment means and with a lateraiiy 'e'iitending ar'cuate channel member and rigidly attached to said intake flue, 'a bracket hingedly pivoted on said clamping means at a point midway between said intake and outlet flues formed and adapted in open position to rest on said clamp and laterally extending arcuate channel and inc'losed'position to pivot over the intake and outlet fines to occupy a forming a combustion cham- 7 position alongside said'outlet flue, a fuel burner provided with a fuel feeding tube mounted within the intake flue and positioned within the combustion chamber, a foraminous metallic screen attached to the fuel feeding tube within the intake flue and extending across the passage area of said flue, and a fuel tank adapted to feed fuel to the burner, said tank being freely supported on said bracket when the latter is in open position.

3. A portable water heater adapted to be immersed in a tank of water for heating purposes comprising means forming a combustion chamber, intake and sectional vent flues connected to the combustion chamber, a screw clamp provided with a laterally extending stabilizing channel adapted to fit over the rim of the tank and rigidly attached to said intake flue, clamping means including a metallic bar rigidly attached toand spacing the said intake and vent flues in parallel relationship, bracket means hingedly mounted on said clamping means, at a point midway between the 'intake'an'd vent flues formed and adapted in on to rest on said screw clamp and laterally extending stabilizing channel and n closed :position to pivot over the intake and vent flues to occupy a position alongside said vent ilues, a liquid fuel burner provided with a fuel feeding tube and funnel positioned withinthe combustion chamber, the tube and funnel "extending into "the intake flue and baffle plates positioned Within supported thereby, a series of the combustion chamber, spaced with respect to each other and arranged and adapted to distribute the products Of combusti on emanating from'the burner'within the combustion chamber, a foraminous metallic screen 'attac bed to the fuel feeding tube within the intake flue and extending across the passage area of said flue, 'and'a fuel tank, freely supported on the bracket meanswhen in open or operating position, a entire 'wat dapted to feed fuel to 'the'burner, the er heater adapted by reason of the the vent flue, the separability of from thejsupporting bracket and the hinged relationship of the supporting bracket.

to the flue clamping means, to be readily assembled for operation and disassembled for compact storage.

JOHN EAY'RES DAVIS, JR.

REFERENCES CITED The following references are of record in the file of this patent:

STATES PATENTS Number 

